| import os |
| import shutil |
| from collections.abc import Generator |
| from pathlib import Path |
|
|
| from flask import current_app |
|
|
| from configs import dify_config |
| from extensions.storage.base_storage import BaseStorage |
|
|
|
|
| class LocalFsStorage(BaseStorage): |
| """Implementation for local filesystem storage.""" |
|
|
| def __init__(self): |
| super().__init__() |
| folder = dify_config.STORAGE_LOCAL_PATH |
| if not os.path.isabs(folder): |
| folder = os.path.join(current_app.root_path, folder) |
| self.folder = folder |
|
|
| def _build_filepath(self, filename: str) -> str: |
| """Build the full file path based on the folder and filename.""" |
| if not self.folder or self.folder.endswith("/"): |
| return self.folder + filename |
| else: |
| return self.folder + "/" + filename |
|
|
| def save(self, filename, data): |
| filepath = self._build_filepath(filename) |
| folder = os.path.dirname(filepath) |
| os.makedirs(folder, exist_ok=True) |
| Path(os.path.join(os.getcwd(), filepath)).write_bytes(data) |
|
|
| def load_once(self, filename: str) -> bytes: |
| filepath = self._build_filepath(filename) |
| if not os.path.exists(filepath): |
| raise FileNotFoundError("File not found") |
| return Path(filepath).read_bytes() |
|
|
| def load_stream(self, filename: str) -> Generator: |
| filepath = self._build_filepath(filename) |
| if not os.path.exists(filepath): |
| raise FileNotFoundError("File not found") |
| with open(filepath, "rb") as f: |
| while chunk := f.read(4096): |
| yield chunk |
|
|
| def download(self, filename, target_filepath): |
| filepath = self._build_filepath(filename) |
| if not os.path.exists(filepath): |
| raise FileNotFoundError("File not found") |
| shutil.copyfile(filepath, target_filepath) |
|
|
| def exists(self, filename): |
| filepath = self._build_filepath(filename) |
| return os.path.exists(filepath) |
|
|
| def delete(self, filename): |
| filepath = self._build_filepath(filename) |
| if os.path.exists(filepath): |
| os.remove(filepath) |
|
|
